Hall took only six runners to the races and never tasted defeat all day - with the first four victorious and the last two separated by only a neck as they ran the quinella in the final race.

"Someone just asked me if it was my birthday - it isn't but it sure feels like it," laughed Hall, who seemed as much in awe of the achievement as any onlooker.

"There are so many well respected trainers here and to win multiple races, two, three or four on a day is very tough but to win five in this company is something really special that I'll always look back on with pride."

Jockey Club records on five winners in a day are sketchy, though Bob Burns is believed to have trained a five-timer during the 1980s and it has been achieved three times in recent years - twice within a month by John Size in late 2005 and also by Caspar Fownes in October 2004.

But no trainer has performed the feat so economically with Hall's only defeated runner, Prime Score, going down to stablemate Ouraja (Brett Prebble) for a fitting end.

"I'm just blown away by the honesty of those two horses - they've both come a long way this season and been great contributors to the stable," Hall said. "Look at Prime Score - three wide without cover all the way and he was still fighting on at the finish."

Something which Prebble said he had been at pains to ensure.

"I was terrified of Prime Score and actually made a bit more use of my horse than I wanted early, when the speed was on, to make sure that I kept Prime Score deep," said Prebble, who himself completed a treble.

"If Prime Score had got over, he would have beaten me. So Ouraja's win might not have been by any fancy margin but it was full of merit and I do feel he is looking for further. If it had been a mile, he would have won a bit easier."

Hall's winners came in all shapes and sizes, opening with 54-1 shot Telecom Emperor (Mark du Plessis) in the Class Five, continuing with generally disappointing Jade Dancer (Du Plessis) at double figures on the dirt and continuing with better-fancied chances in Silent Dragon (Douglas Whyte), Siameric Te Specso (Prebble) and Ouraja.

Stewards called for an explanation for the improved run by Telecom Emperor, who had been last at Happy Valley just eight days before after hanging on the turns, and Hall said a freshening of the horse's training routine may have contributed to him travelling more happily in this race.

"He's got an awful action, but he travelled better and if the jockey holds on to him around the bends as Mark did today, you can keep him a bit better balanced," Hall said. "He does have a little ability when it all happens the right way, but he's no star. It's just nice to win one with him."

Hall told stewards the win had been a surprise to the stable and to some extent perhaps the same was true of Jade Dancer, who was well weighted on a 44 rating but the yard has seen too many false dawns with the disappointing gelding in the past to be confident.

"Putting the blinkers back on a couple of starts ago helped because he does resent having horses around him but probably the rating was the thing," Hall said. "He has won at the top of Class Four in the past so towards the bottom of the grade he was well in if the race panned out for him."